Re: The space in the STD codes
They were in the early days of STD laid out differently to that! See attached from an STD code book printed during the days of only two pages of codes! Printed in the format of 0AB C or 0AB CDE
i.e Carlisle was 0CA 8 and Burgh-by-Ands, a UAX off Carlisle was shown as 0CA 878
With reference to 'All-Figure-Numbering' I have a May 1966 codebook with all the STD codes in numbers only but Director Areas were still using first three letters of exchange names as part of the number for older exchanges whereas new exchanges in the Director areas were all figure at that time. The change to AFN had been completed by beginning of 1968.
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